1390156 has 6 divisors (see below), whose sum is σ = 2432780. Its totient is φ = 695076.

The previous prime is 1390121. The next prime is 1390157. The reversal of 1390156 is 6510931.

It is a self number, because there is not a number n which added to its sum of digits gives 1390156.

It is not an unprimeable number, because it can be changed into a prime (1390157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173766 + ... + 173773.

2^1390156 is an apocalyptic number.

It is an amenable number.

1390156 is a deficient number, since it is larger than the sum of its proper divisors (1042624).

1390156 is a wasteful number, since it uses less digits than its factorization.

1390156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347543 (or 347541 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 1390156 is about 1179.0487691355. The cubic root of 1390156 is about 111.6060778711.

The spelling of 1390156 in words is "one million, three hundred ninety thousand, one hundred fifty-six".